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题名: Comparative study on friction force pattern anisotropy of graphite
作者: Liu ZH(刘志华); Wang WX(王文学); Liu LQ(刘连庆)
作者部门: 机器人学研究室
关键词: Friction force pattern ; Dimensionality reduction effect ; Prandtl–Tomlinson model
刊名: Applied Surface Science
ISSN号: 0169-4332
出版日期: 2015
卷号: 332, 页码:473-479
收录类别: SCI ; EI
产权排序: 1
摘要: In this paper, the experimental and theoretical studies on the atomic-scale two-dimensional friction force pattern are presented. Atomic-scale friction experiments were conducted on graphite surfaces with the atomic force microscopy (AFM) under ambient conditions. Owing to the dimensionality reduction effect of optical method detecting the probe cantilever deflection, the friction force patterns were revealed in these experiments. The friction phenomenon was analyzed theoretically in the framework of Prandtl-Tomlinson model in two dimensions. The dimensionality reduction effect was formulated and involved in the model. The comparison shows the good quantitative agreement between experimental and simulation results, suggesting that the friction force pattern can be interpreted reliably using the model. Meanwhile atomic arrangement was obtained in friction force pattern, the origin and variation of which were also analyzed. The condition for appearance of atomic arrangement was determined qualitatively. By means of band-pass filtering, hexagonal rings or crystal lattices images of graphite were obtained.
语种: 英语
WOS记录号: WOS:000350373300060
WOS标题词: Science & Technology ; Physical Sciences ; Technology
类目[WOS]: Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
关键词[WOS]: ATOMIC-SCALE FRICTION ; MICROSCOPY ; SURFACE ; RESOLUTION ; MODELS
研究领域[WOS]: Chemistry ; Materials Science ; Physics
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内容类型: 期刊论文
URI标识: http://ir.sia.cn/handle/173321/15778
Appears in Collections:机器人学研究室_期刊论文

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